基于城市道路的游憩型绿道选线适宜性评价——以吉首市老城区为例

Evaluation of the Suitability of Recreational Greenway Selection Based on Urban Road:Case Study of Jishou Old City

以吉首市老城区为研究对象,在资料查阅与实地调查的基础上,结合相关选线研究,从生态景观与交通条件2个角度对城市道路进行了分析,选取道路绿化率、周边环境美观度、连接土地类型、道路等级、临街区域宽度、车流量、非机动车道及人行道设置7个因子作为评价指标,通过问卷调查和专家测评,利用层次分析法确立指标权重,并对各等级城市道路进行打分,计算每条道路的适宜性分值,从而划分城市绿道适宜性等级,确定了“两横”“两纵”游憩型绿道网络规划方案,为吉首市老城区绿道选线提供参考.

This article takes the old city area of Jishou City as the research object.Based on the literature research and field surveys,combined with relevant route selection studies,we evaluate the urban roads from the perspectives of ecological landscape and traffic conditions.The evaluating indexes include seven factors:the road greening rate,the surrounding landscape,the types of connected land,the road grades,the width of street front,the traffic flow,and non-motorized vehicle lane and sidewalks.Then through the questionnaire survey and expert evalution,combined with analytic hierarchy process(AHP),we establish the weight of each index.Finally,by scoring each index and calculating the weighted suitability value of each road,we rank the urban greenway suitability into levels,and proposes a greenway grid with two horizontal and two longitudinal lines,which provides a basis for the urban greenway route selection.